Atomizing spray device for flue gas desulfurization

Abstract

This utility model discloses an atomizing spray device for flue gas desulfurization, including a housing with an inlet pipe and a functional box. The housing contains a spray frame and an exhaust frame. The functional box contains three movable chambers and three rotating chambers. Each of the three movable chambers has a piston plate, and each of the three rotating chambers has a reciprocating screw extending to the outside of the functional box. The piston plates are connected to the reciprocating screws via a connecting mechanism, and the three reciprocating screws are connected by a synchronization mechanism. The functional box contains a drive motor, and the middle reciprocating screw is connected to the drive motor via a transmission mechanism. This utility model integrates desulfurization liquid spraying and oxidation air delivery into a single power system through the synchronous rotation of the three reciprocating screws, achieving highly efficient synergy between the desulfurization reaction and oxidation process. Compared to traditional independent liquid and air supply devices, it simplifies the structure while improving overall operating efficiency, achieving high-speed desulfurization.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to an atomizing spray device for flue gas desulfurization. Background Technology

[0002] In the field of industrial flue gas desulfurization, the limestone-gypsum method has become one of the mainstream processes due to its high desulfurization efficiency and the resource utilization of by-products. In this process, the atomizing spray device is the core equipment, and its performance directly affects the desulfurization efficiency and operating costs. However, most atomizing spray devices currently on the market suffer from significant technical bottlenecks.

[0003] Existing atomizing spray systems have relatively limited functionality, typically focusing solely on desulfurization liquid spraying. This involves atomizing the desulfurization liquid (such as limestone slurry) to react with sulfur dioxide in the flue gas. The supply of oxidation air relies on separate blower equipment, such as Roots blowers or centrifugal blowers. This separate design makes the entire desulfurization system complex, with numerous pieces of equipment. This significantly increases the floor space required and raises the difficulty and cost of installation and commissioning. Furthermore, the complex system structure increases the difficulty and cost of equipment maintenance. The increased number of independent devices means more potential points of failure, requiring maintenance personnel to inspect and repair the liquid and air supply equipment separately, consuming substantial manpower and time. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an atomized spray device for flue gas desulfurization.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flue gas desulfurization atomizing spray device includes a housing, on which an inlet pipe and a functional box are installed. Inside the housing are a spray frame and an exhaust frame. The functional box contains three movable chambers and three rotating chambers. Each of the three movable chambers has a piston plate, and each of the three rotating chambers has a reciprocating screw extending to the outside of the functional box. The piston plates are connected to the reciprocating screws via a connecting mechanism, and the three reciprocating screws are connected to each other via a synchronization mechanism. The functional box is equipped with a drive motor, and the middle reciprocating screw is connected to the drive motor via a transmission mechanism. The functional box also has an inlet pipe, an outlet pipe, an intake pipe, and an exhaust pipe. The outlet pipe is connected to the spray frame, and the exhaust pipe is connected to the exhaust frame.

[0007] Preferably, the connecting mechanism includes a connecting frame threaded onto a reciprocating screw, the end of which is fixedly connected to a piston plate.

[0008] Preferably, the synchronization mechanism includes transmission gears fixedly mounted on a reciprocating lead screw, and the three transmission gears mesh with each other.

[0009] Preferably, the transmission mechanism includes a drive gear fixedly mounted on the output shaft of the drive motor, and the drive gear meshes with an intermediate transmission gear.

[0010] Preferably, the inlet pipe, outlet pipe, suction pipe, and vent pipe are all equipped with valves, and the valves are one-way valves.

[0011] Preferably, a protective net is provided on the air intake pipe, and the protective net is threadedly installed on the air intake pipe.

[0012] The beneficial effects of this utility model are:

[0013] 1. By synchronously rotating three reciprocating screws, the desulfurization liquid spraying and oxidation air delivery are integrated into the same power system, achieving efficient coordination between the desulfurization reaction and oxidation process. Compared with traditional independent liquid and gas supply devices, the structure is simplified while improving the overall operating efficiency, thus achieving the goal of high-speed desulfurization.

[0014] 2. The design of the piston plates on both sides moving in opposite directions ensures a continuous supply of desulfurization liquid and avoids a decrease in desulfurization efficiency due to interruption of liquid supply; the reciprocating motion of the middle piston plate realizes stable air delivery, provides sufficient oxygen for the oxidation reaction, and ensures the stability of gypsum formation.

[0015] 3. The protective net on the suction pipe effectively blocks impurities from entering the active chamber, reducing equipment wear and malfunctions caused by impurities and extending the service life of the device; the one-way valve prevents backflow of liquid and gas, further improving the reliability of the device operation.

[0016] 4. The overall structure is compact, and the components are cleverly connected to reduce space occupation; the modular design concept is adopted, such as the detachable protective net, which facilitates daily maintenance and repair, and reduces maintenance costs and difficulties. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an atomizing spray device for flue gas desulfurization proposed in this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the right-side view structure;

[0019] Figure 3 for Figure 2 A schematic diagram of the vertical section structure;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of the structure at point A.

[0021] In the diagram: 1. Box body, 2. Smoke inlet pipe, 3. Spray rack, 4. Function box, 5. Liquid inlet pipe, 6. Liquid outlet pipe, 7. Drive motor, 8. Drive gear, 9. Transmission gear, 10. Exhaust rack, 11. Movable chamber, 12. Rotating chamber, 13. Reciprocating screw, 14. Piston plate, 15. Connecting frame, 16. Suction pipe, 17. Exhaust pipe, 18. Protective net. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A flue gas desulfurization atomizing spray device includes a housing 1, an inlet pipe 2 and a functional box 4 installed on the housing 1. Inside the housing 1, there is a spray frame 3 and an exhaust frame 10. Inside the functional box 4, there are three movable chambers 11 and three rotating chambers 12. Each of the three movable chambers 11 is equipped with a piston plate 14. The two piston plates 14 on both sides move in opposite directions. If one moves up, the other moves down, thus ensuring that one of the two movable chambers 11 absorbs liquid and the other discharges liquid, ensuring that the spray frame 3 is sprayed with liquid.

[0024] Each of the three rotating chambers 12 is equipped with a reciprocating screw 13 extending to the outside of the function box 4. The piston plate 14 is connected to the reciprocating screw 13 through a connecting mechanism. The three reciprocating screws 13 are connected to each other through a synchronization mechanism. The function box 4 is equipped with a drive motor 7. The middle reciprocating screw 13 is connected to the drive motor 7 through a transmission mechanism. The function box 4 is equipped with an inlet pipe 5, an outlet pipe 6, an air suction pipe 16, and an air outlet pipe 17. The outlet pipe 6 is connected to the spray frame 3, and the air outlet pipe 17 is connected to the exhaust frame 10.

[0025] The connecting mechanism includes a connecting frame 15 threaded onto the reciprocating screw 13, with the end of the connecting frame 15 fixedly connected to the piston plate 14. The connecting frame 15 has a U-shaped design, with its vertical portion sliding through the bottom wall of the rotating chamber 12 and extending into the movable chamber 11. Therefore, the connecting frame 15 has its own limit and will not rotate with the reciprocating screw 13.

[0026] The synchronization mechanism includes transmission gears 9 fixedly mounted on the reciprocating lead screw 13, with three transmission gears 9 meshing with each other. The transmission mechanism includes a drive gear 8 fixedly mounted on the output shaft of the drive motor 7, which meshes with one of the middle transmission gears 9. With this configuration, once the drive motor 7 is connected to an external power source and started, the three reciprocating lead screws 13 can rotate synchronously.

[0027] Valves are installed in the inlet pipe 5, outlet pipe 6, suction pipe 16, and vent pipe 17. The valves are one-way valves. The two movable chambers 11 on both sides are connected to the inlet pipe 5 and the outlet pipe 6. As shown in the figure, the inlet pipe 5 and the outlet pipe 6 are both Y-shaped. The movable chamber 11 in the middle is connected to the suction pipe 16 and the vent pipe 17.

[0028] A protective net 18 is provided on the suction pipe 16, and the protective net 18 is threaded onto the suction pipe 16. The aforementioned protective net 18 prevents particulate impurities from being sucked into the active chamber 11.

[0029] Components not specifically described in this utility model are all standard parts and can be purchased from the market. The specific connection methods for each component all employ mature methods from the prior art, and will not be detailed here. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0030] Working principle of this utility model:

[0031] After the drive motor 7 starts, the drive gear 8 on its output shaft meshes with the transmission gear 9 on the intermediate reciprocating screw 13, driving the intermediate reciprocating screw 13 to rotate. Since the transmission gears 9 on the three reciprocating screws 13 mesh with each other, a synchronization mechanism is formed, so that the three reciprocating screws 13 rotate synchronously.

[0032] The reciprocating screws 13 on both sides drive the piston plates 14 to reciprocate within the movable chamber 11 via a connecting mechanism (U-shaped connecting frame 15 connected to the piston plates 14), with the two piston plates 14 moving in opposite directions. When one piston plate 14 moves upward, the movable chamber 11 draws in limestone slurry through the inlet pipe 5; the other piston plate 14 moves downward, pressing the slurry in the movable chamber 11 through the outlet pipe 6 to the spray frame 3, achieving continuous and stable slurry spraying. The spray frame 3 atomizes the limestone slurry into fine droplets, which fully contact the flue gas entering the chamber 1 from the flue gas inlet pipe 2, carrying out the desulfurization reaction.

[0033] The reciprocating screw 13 in the middle drives the corresponding piston plate 14 to reciprocate within the moving chamber 11 via a connecting mechanism, realizing the intake and exhaust of air. When the piston plate 14 moves upward, the moving chamber 11 draws in air through the suction pipe 16, and the protective net 18 on the suction pipe 16 can block particulate impurities; when the piston plate 14 moves downward, the air is delivered to the exhaust frame 10 through the exhaust pipe 17, and then the exhaust frame 10 blows air (or oxygen) into the reaction area inside the chamber 1, providing the necessary oxygen for the oxidation of calcium sulfite to calcium sulfate after the desulfurization reaction, and promoting gypsum formation. The one-way valves in the liquid inlet pipe 5, liquid outlet pipe 6, suction pipe 16, and exhaust pipe 17 ensure that the liquid and gas flow in the specified direction and prevent backflow.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An atomizing spray device for flue gas desulfurization, comprising a housing (1), characterized in that, The housing (1) is equipped with a smoke inlet pipe (2) and a functional box (4). Inside the housing (1) are a spray rack (3) and an exhaust rack (10). Inside the functional box (4) are three movable chambers (11) and three rotating chambers (12). Each of the three movable chambers (11) is equipped with a piston plate (14). Each of the three rotating chambers (12) is equipped with a reciprocating screw (13) extending to the outside of the functional box (4). The piston plate (14) is connected to the reciprocating screw through a connecting mechanism. The three reciprocating screws (13) are connected by a synchronization mechanism. The function box (4) is equipped with a drive motor (7). The middle reciprocating screw (13) is connected to the drive motor (7) through a transmission mechanism. The function box (4) is equipped with an inlet pipe (5), an outlet pipe (6), an air suction pipe (16), and an air outlet pipe (17). The outlet pipe (6) is connected to the spray frame (3), and the air outlet pipe (17) is connected to the exhaust frame (10).

2. The atomizing spray device for flue gas desulfurization according to claim 1, characterized in that, The connecting mechanism includes a connecting frame (15) threadedly mounted on a reciprocating screw (13), the end of which is fixedly connected to a piston plate (14).

3. The atomizing spray device for flue gas desulfurization according to claim 2, characterized in that, The synchronization mechanism includes transmission gears (9) fixedly mounted on the reciprocating lead screw (13), and the three transmission gears (9) mesh with each other.

4. The atomizing spray device for flue gas desulfurization according to claim 3, characterized in that, The transmission mechanism includes a drive gear (8) fixedly mounted on the output shaft of the drive motor (7), and the drive gear (8) meshes with a transmission gear (9) in the middle.

5. The atomizing spray device for flue gas desulfurization according to claim 4, characterized in that, The inlet pipe (5), outlet pipe (6), suction pipe (16) and outlet pipe (17) are all equipped with valves, which are one-way valves.

6. The atomizing spray device for flue gas desulfurization according to claim 5, characterized in that, A protective net (18) is provided on the air intake pipe (16), and the protective net (18) is threaded onto the air intake pipe (16).

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